JP2009174257A - Keyless entry system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a keyless entry system capable of saving consumption of a battery while maintaining advantages of keyless entry. <P>SOLUTION: This keyless entry system is constituted to transmit a request signal to an electronic key 20 from a transmitting means 10 mounted on a vehicle 100, and unlock a door of the vehicle when detecting an answer signal returned from the electronic key. The keyless entry system has a long time parking state determining means 40 for determining that the vehicle is parked for many hours, a door locking detecting means 50 for detecting locking of the door, and a transmission controlling means 60 for stopping the transmission of the request signal by the transmitting means when it is determined that the vehicle is parked for many hours by the long time parking state determining means and locking of the door is detected by the door locking detecting means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a keyless entry system, and more particularly to a keyless entry system in which a request signal is transmitted to an electronic key from transmission means mounted on a vehicle.

Conventionally, it consists of a receiver that generates radio waves for transmitter search attached to a vehicle and a transmitter that receives radio waves for transmitter search and transmits transmission radio waves with a predetermined code. In the vehicle wireless door lock control device that unlocks the door when the code matches the specific code, the transmitter search radio wave is generated intermittently and the intermittent period is When the period is longer than before reception and when the driver is in the vehicle, the generation of radio waves for searching the transmitter is stopped, the user does not switch the transmitter, and the vehicle battery and transmitter battery are exhausted. There is known a technique for reducing the number of times (for example, see Patent Document 1). Such a technique is also called a keyless entry system.
Japanese Patent No. 3192715

  However, in the configuration described in Patent Document 1 described above, when the vehicle is parked, a radio wave for transmitter search is periodically transmitted even though it is intermittent. There was a problem that the battery continued to flow and consumed the battery.

  Accordingly, an object of the present invention is to provide a keyless entry system that can reduce battery consumption while maintaining the convenience of keyless entry.

To achieve the above object, the keyless entry system according to the first aspect of the present invention transmits a request signal to an electronic key from a transmission means mounted on a vehicle, and when an answer signal returned from the electronic key is detected. A keyless entry system for unlocking the door of the vehicle,
Long-time parking state determination means for determining that the vehicle is in a state of parking for a long time;
Door lock detecting means for detecting locking of the door;
When the long-time parking state detection means determines that the vehicle is in a long-time parking state and the door lock detection means detects locking of the door, the transmission means stops transmitting the request signal. Transmission control means.

  Thereby, when the vehicle is in the parking state for a long time, transmission of the transmission means mounted on the vehicle can be stopped, unnecessary transmission can be stopped, and useless battery consumption can be suppressed.

The second invention is the keyless entry system according to the first invention,
The long-time parking state determining means determines that the vehicle is in a long-time parking state when the vehicle is parked at a specific position where long-time parking is performed.

  As a result, when the vehicle is parked at a specific position such as a predetermined parking lot where long-time parking is predicted, the vehicle is likely to park for a long time. Can be stopped.

A third invention is the keyless entry system according to the second invention,
The long-time parking state determination means includes a radio wave receiver that receives a signal transmitted from a radio wave transmitter provided at the specific position,
When the radio receiver receives a signal transmitted from the radio transmitter, it is determined that the vehicle has been parked for a long time.

  As a result, radio wave transmitters are installed in places where parking is carried out for a long time on a daily basis, such as home parking lots, and when vehicles are parked in such places, transmission of request signals from the transmission means is stopped. In addition, wasteful consumption of the battery can be reduced.

A third invention is the keyless entry system according to the second invention,
The long-time parking state detection means includes a navigation device in which the specific position is set,
When the navigation device detects that the vehicle has reached the specific position, the navigation device determines that the vehicle has been parked for a long time.

  As a result, when the vehicle is parked in a place where the vehicle is likely to be parked for a long period of time, such as a parking lot at an international airport, for example, the transmission of the request signal from the transmission means is stopped and unnecessary transmission is performed. By stopping, battery consumption can be suppressed.

4th invention is the keyless entry system which concerns on 1st invention,
The long-time parking state detection means is linked with predetermined scheduling means, and determines that the vehicle is in a long-time parking state during a time zone when the vehicle is not scheduled to be used by the scheduling means. It is characterized by.

  Thereby, when there is no plan to use the vehicle and there is a high possibility of parking for a long time, it is possible to stop the transmission of the transmission means and reduce battery consumption.

  According to the present invention, battery consumption can be suppressed.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a functional block diagram showing a schematic configuration of a keyless entry system according to an embodiment to which the present invention is applied. In FIG. 1, the keyless entry system according to this embodiment includes a transmission unit 10, a long-time parking state determination unit 40, a door lock detection unit 50, and a transmission control unit 60. Further, as related constituent elements, an electronic key 20, an answer signal receiving means 30, a smart key control ECU (Electronic Control Unit) 70, a body ECU 80, and a door lock means 81 may be provided. .

  The electronic key 20 is normally carried by the user 110 and moves in and out of the vehicle 100. Other components are mounted on the vehicle 100.

  The transmission means 10 is a radio wave transmission means for transmitting a request signal (request radio wave) to the electronic key 20 existing outside the vehicle. In FIG. 1, the vehicle transmission antenna 11 is representatively shown as the transmission means 10, but other components such as a necessary transmitter for transmitting the request signal wave are also provided as necessary. It's okay.

  The transmission means 10 may be provided, for example, in a door, a trunk, or the like, and transmits a request signal radio wave to the electronic key 20 at a predetermined cycle. The request signal wave may be a radio wave that reaches only within a predetermined detection area. For example, an area within about 70 cm from the antenna for outside transmission may be used as the detection area.

  The transmission means 10 is basically used when the door lock of the vehicle 100 is detected and the electronic key 20 is outside the vehicle, for example, when the vehicle 100 is locked and parked and the user 100 is outside the vehicle. A request signal radio wave is continuously transmitted at a predetermined cycle. Since it is unknown when there is a reply signal to the request signal, the sending means 10 continuously sends the request signal and waits for a response until there is a reply signal. When the transmission means 10 continuously transmits a request signal at a predetermined cycle, battery consumption proceeds. Therefore, in the keyless entry system according to the present embodiment, control is performed to stop the transmission means under a predetermined condition. This point will be described later.

  Further, the transmission means 10 may further include an in-vehicle transmission antenna 12 in the vehicle 100. Thereby, it is possible to detect whether or not the electronic key 20 exists in the vehicle.

  The electronic key 20 receives a request signal wave transmitted from the outside transmitting antenna 10 in the detection area, and when receiving this, transmits a predetermined key ID code as an answer signal. Therefore, the electronic key 20 includes a transmission unit. The electronic key 20 is carried by the user 110. For example, when the user 110 carries the electronic key 20 and enters the detection area, a transmission / reception that returns an answer signal to the vehicle side in response to a request signal transmitted from the transmission means. I do.

  The answer signal receiving means 30 is means for receiving an answer signal from the electronic key 20. Elements necessary for receiving means such as a receiving antenna and a tuner may be provided. The predetermined key ID code received by the answer signal receiving means 30 is transmitted to the smart key control ECU 70.

  The smart key control ECU 70 is arithmetic control processing means that performs overall control related to the keyless entry system. As a normal function, the smart key control ECU 70 collates the key ID code transmitted from the answer signal receiving means 30 with the normal key ID code, and determines whether the key ID code based on the answer signal is normal. judge. When it is determined that the key ID code of the answer signal is valid, an unlock signal is output to the body ECU 80.

  The body ECU 80 is an electronic control unit that controls door locking / unlocking, door mirrors, and the like. In the keyless entry system according to this embodiment, the door lock unit 81 is used based on a command signal from the smart key control ECU 70. Control the door locking and unlocking. As described above, when the unlock signal is received from the smart key control ECU 70, the door is unlocked and the door lock unit 81 is unlocked.

  The door lock unit 81 is a unit for locking and unlocking the door of the vehicle 100, and the locking and unlocking may be controlled by the body ECU 80. As long as the door lock unit 81 can lock and unlock the door, various modes may be applied. For example, the door lock unit 81 may be a touch sensor behind the door grip. If the touch sensor is effective, the unlocking is simultaneously performed by a normal door opening / closing operation, and thus such means may be included. That is, for example, when the smart key control ECU 70 determines that the key ID code is valid, the body ECU 80 performs control such that the touch sensor is valid, and the smart key control ECU 70 does not determine that the key ID code is valid. If the control is performed so that the touch sensor is disabled, the door can be locked and unlocked in a format suitable for smart entry.

  The long-time parking state determination means 40 is a means for determining whether or not the vehicle 100 is in a long-time parking state. As described above, when the vehicle 100 is parked, the request signal wave is continuously transmitted from the transmission means 10, so that the battery is consumed. Therefore, in the keyless entry system according to the present embodiment, the long-time parking state determination unit 40 is provided, and when the vehicle 100 is highly likely to park for a long time, the transmission of the request signal of the transmission unit 10 is performed. Control to stop. In addition, as an element which determines whether the vehicle 100 is a parking state for a long time, there are various elements, such as a parking place and a parking time, and various aspects can be considered in the determination method, The concrete Details will be described later.

  The door lock detection unit 50 is a unit for detecting a locked / unlocked (locked / unlocked) state of the door of the vehicle 100. The above-mentioned long-time parking state determination means determines whether or not the vehicle 100 is in a long-time parking state based on the parking location and parking time. In order to confirm that the vehicle 100 is in a parking state, not just a stop. Since it is necessary to confirm that the door is locked, the door lock detecting means 50 performs this detection.

  The door lock detection means 50 may be provided on the door and directly detect the locking of the door, or may be incorporated in the smart key control ECU 70 or the body ECU 80 to detect the locking of the door as an electric signal. May be. For example, when the door of the vehicle 100 is locked by the smart entry system, the smart key control ECU 70 calculates whether or not the conditions for locking are satisfied. The door locking may be detected by detecting a locking signal from the control ECU 70, the body ECU 80, or the like.

  The transmission control unit 60 is a unit that controls transmission of the transmission unit 10 and also performs control for stopping transmission of the transmission unit 10. In the keyless entry system according to the present embodiment, the transmission control means 60 determines that the long-time parking state determination means 40 determines that the vehicle 100 is in the long-time parking state, and the door lock detection means 50 locks the door. When it is detected, control is performed to stop the transmission of the transmission means 10. That is, when the vehicle 100 is highly likely to be parked for a long time and the door is locked, it is determined that the vehicle has been parked for a long time, and the transmission of the request signal of the transmission means 10 is stopped. Thereby, unnecessary dark current can be eliminated and battery consumption can be reduced.

  Since the transmission control means 60, the smart key control ECU 70, and the body ECU 80 are means for performing arithmetic processing such as control, they are calculated by an MPU (Micro Processing Unit), a predetermined electronic circuit, an ASIC (Application Specific Integrated Circuit), or the like. It may be configured as a processing means.

  FIG. 2 is a functional block diagram showing a schematic configuration of the keyless entry system according to the first embodiment to which the present invention is applied. In the keyless entry system according to the first embodiment, the smart key radio wave receiver 40a and the smart key radio wave receiving antenna 41a are applied as the long-time parking state determination means 40 of the keyless entry system according to FIG.

  In FIG. 2, the keyless entry system according to the first embodiment includes a transmission unit 10, a smart key radio wave receiver 40 a and a smart key radio wave reception antenna 41 a corresponding to the long-time parking state determination unit 40, and a door lock detection unit 50. And transmission control means 60. Further, as related components, a smart key control ECU 70, a body ECU 80, a door lock unit 81, and a radio wave transmitter 90 are provided.

  The radio wave transmitter 90 is radio wave transmitting means provided at a specific position such as a parking lot where the vehicle 100 is parked for a long time or a long time. For example, a parking lot at home is considered to be a place where the vehicle 100 is generally parked for a long time. In such a place, if the user 110 installs the radio wave transmitter 90, receives the radio wave on the vehicle 100 side, and recognizes that the vehicle is parked in the home parking lot, it is determined that the user has been parked for a long time. It becomes possible to do.

  The radio wave transmitter 90 can apply various modes as long as the radio wave transmitter 90 can transmit radio waves and can perform wireless communication. However, in the keyless entry system according to the first embodiment, the same method as the electronic key 20 is used. An example configured as a transmission means is shown. In FIG. 2, the radio wave transmitter 90 includes a parking lot side control unit 91 and a transmission antenna 92, and the transmission antenna 92 transmits radio waves of the same transmission method as the electronic key 20. Yes.

  Correspondingly, the smart key radio wave receiver 40a and the smart key radio wave receiving antenna 41a mounted on the vehicle 100 may be applied to the existing radio wave receiver and radio wave receiving antenna for the electronic key 20. For example, the answer signal receiving unit 30 described with reference to FIG. 1 can be applied as it is. In this case, if the key ID code of the radio wave transmitted from the radio wave transmitter 90 is set as a code different from the electronic key 20, there is no possibility of confusing both, and it is also necessary to newly install and install a large-scale facility. Disappear.

  In this way, the smart key radio wave receiver 40a and the smart key radio wave receiving antenna 41a are mounted on the vehicle 100 as the long-time parking state determination means 40, and this is installed in a place where long-term parking is performed such as a specific parking lot. When the radio wave is received from the radio wave transmitter 90, it can be determined that the vehicle 100 has reached a specific position where long-term parking is performed. If the signal is received from the radio wave transmitter 90, for example, when the ignition switch of the vehicle 100 is turned off, the vehicle 100 has reached a specific position and the engine is stopped. It can be determined that the vehicle is parked for a long time. Furthermore, by detecting the door lock by the door lock detection means 50, it can be confirmed that parking has been performed. In this way, when parking is made at a specific position where long-time parking is determined, such as a home parking lot, if this is detected and transmission of the request signal of the transmission means 10 is stopped, the battery can be surely received. Consumption can be prevented.

  Since the other components are the same as the description of the keyless entry system according to FIG. 1, the same reference numerals are assigned to the respective components, and the description thereof is omitted.

  Next, the operation of the keyless entry system according to the first embodiment will be described with reference to FIG. FIG. 3 is a process flow diagram of the keyless entry system according to the first embodiment. In addition, about the component similar to demonstrated so far, the same referential mark is attached | subjected and the description is abbreviate | omitted.

  In step 100, the vehicle 100 stops at the parking lot.

  In step 110, it is determined whether or not the vehicle 100 has received a specific signal when the ignition switch is off. Here, the specific signal means a signal transmitted from the radio wave transmitter 90. For example, the specific signal may be a radio signal that uses a specific key ID code and can be distinguished from other signals.

  Since the engine is stopped when the ignition switch is off, it can be confirmed that the vehicle 100 is stopped. The reception of the specific signal transmitted from the radio wave transmitter 90 may be performed by the smart key radio wave receiving antenna 41a and the smart key radio wave receiver 40a mounted on the vehicle 100 as described above.

  In step 110, when the smart key radio wave receiver 40 a receives a specific signal, the received signal is transmitted to the transmission control means 60. In the transmission control means 60 that has received the signal from the smart key radio receiver 40a, it is determined that the vehicle 100 is in a state where the possibility of parking for a long time is high.

  In step 110, if the vehicle 100 side receives a signal from the radio wave transmitter 90, the process proceeds to step 120. If the vehicle 100 does not receive a signal from the radio wave transmitter 90, the process proceeds to step 130.

  In step 120, the door lock detection means 50 determines and detects whether or not all the doors of the vehicle 100 are locked.

  First, in the operation of the normal keyless entry system, when the user 110 presses the switch on the door grip when the doors are all closed and the electronic key 20 does not exist in the vehicle interior, the pressed switch exists. A request signal radio wave is transmitted from the door transmitting means 10 to the outside of the vehicle. The electronic key 20 receives this and returns an answer signal of a predetermined key ID code. Next, this is received by the smart key radio wave receiving antenna 41 a and the smart key radio wave receiver 40 a and transmitted to the smart key control ECU 70. When the smart key control ECU 70 determines that the key ID code is valid, the smart key control ECU 70 performs control to lock all the doors after confirming that all the doors are closed. At this time, for example, the locking of the door may be detected by detecting the locking signal of the smart key control ECU 70 or the body ECU 80.

  Further, when locking is performed by means other than a door grip switch such as locking by a wireless key or locking by inserting the key into the cylinder, all the doors are locked by these. In this case, for example, the door lock detection means 50 provided on the door may detect the locking of the door.

  As described above, when the vehicle 100 is parked by any means, all the doors should be finally locked. In step 120, the door lock detecting means 50 It is determined and detected whether all doors are locked.

  In step 120, it is determined whether or not all doors are locked. If all doors are not locked, step 120 is repeated. On the other hand, if all doors are locked, a door lock signal is transmitted to the transmission control means 60 and the process proceeds to step 140.

  In Step 140, in response to the results of Step 110 and Step 120, the transmission control unit 60 stops the transmission of the request signal by the transmission unit 10 to the electronic key 20, and the processing flow ends. Thereby, when the vehicle 100 is in a parking state for a long time, unnecessary transmission of request signals from the transmission means 10 can be stopped, and battery consumption can be reduced.

  Returning to step 110, if the vehicle 100 does not receive a specific signal when the ignition switch is turned off, the process proceeds to step 130.

  In step 130, as in step 120, the door lock detection means 50 detects whether or not all the doors of the vehicle 100 are locked, and the result is transmitted to the transmission control means 60 to lock the doors. Presence / absence is determined.

  When a door is locked by an ordinary keyless entry system, the door is first locked depending on whether or not the conditions for locking by the ordinary smart entry system are satisfied. That is, it is detected whether all the doors of the vehicle 100 are closed and whether the electronic key 20 is not present in the passenger compartment. When the user 110 presses a switch on the door grip with all the doors closed and the electronic key 20 does not exist in the passenger compartment, the transmission means 10 and the electronic key 20 provided on the door The smart key control ECU 70 determines whether or not the key ID code received by the smart key radio wave receiver 40a is legitimate. If it is a legitimate code, it is confirmed that all doors are closed and locked.

  Also, in the case of locking with a wireless key or locking performed by inserting the key into the cylinder, the door lock detecting means 50 can determine and detect whether or not the door is locked.

  If it is determined in step 130 that all the doors are not locked, step 130 is repeated until it is determined that all the doors are locked. On the other hand, if it is detected in step 130 that all the doors are locked, the process proceeds to step 150.

  In step 150, the transmission control unit 60 performs control to start transmission of a request signal to the electronic key 20 from the transmission unit 10 periodically, and the processing flow ends. In step 110, since the smart key radio wave receiver 40a has not received a specific signal from the radio wave transmitter 90, the vehicle 100 can be determined to be in a normal parking state when going out. The keyless entry system performs control for periodically sending a request signal from the sending means 10. Thereby, when the vehicle 100 is not parked for a long time, it is possible to execute easy locking and unlocking control of a normal keyless entry system, and the user 110 can perform a comfortable getting on and off.

  In this way, the radio wave transmitter 90 for identifying this is installed at a specific position where long-time parking is predicted, the specific radio wave transmitted by the radio wave transmitter 90 is received, and the door of the vehicle 100 is locked. It is determined that the vehicle is parked for a long time and the transmission of the transmission means 10 is stopped. In the case of normal parking, periodic transmission is performed. In the case of normal parking, it is possible to maintain comfort that does not require key operations.

  When the user 110 gets on the vehicle 100 when the control for stopping the transmission of the request signal of the transmission means 10 is executed by the keyless entry system according to the first embodiment, the user 110 If the transmission of the request signal is resumed by pressing the switch, the normal keyless entry system can be operated without any problem, and the user 110 can get on and off comfortably.

  Thus, according to the keyless entry system concerning Example 1, it can be set as the keyless entry system which reduces battery consumption, using the existing in-vehicle communication equipment.

  FIG. 4 is a functional block diagram showing a schematic configuration of a keyless entry system according to the second embodiment to which the present invention is applied. The keyless entry system according to the second embodiment includes transmission means 10, radio wave receiver 40 b and reception antenna 41 b corresponding to long-time parking state detection means 40, door lock detection means 50, and transmission control means 60. . Further, as related components mounted on the vehicle 100, a smart key control ECU 70, a body ECU 80, and door lock means 81 may be provided, and as a related component outside the vehicle, a radio wave transmitter 90a may be provided.

  In the keyless entry system according to the second embodiment, in the case of the keyless entry system according to the first embodiment, the radio wave transmitter 90a is installed at a specific position where long-time parking is generally performed such as a parking lot at home. However, it differs from the keyless entry system according to the first embodiment in that the radio wave transmitter 90a is different from the communication method of the electronic key 20.

  In the keyless entry system according to the second embodiment, for example, the radio wave transmitter 90a may apply a communication system such as DRSC (Dedicated Short Range Communication) or RFID (Radio Frequency Identification). DRSC is a two-way wireless communication technique used in ETC (Electronic Toll Collection System) and the like, and can realize high-speed communication of about 4 Mbps in a narrow range of about several meters to several hundred meters. RFID is an authentication technology using radio waves, and exchanges information from a tag embedded with ID information by short-distance wireless communication of several centimeters to several meters using radio waves. The radio wave transmitter 90a may include a parking lot side control unit 91a capable of transmitting radio waves by these communication methods and a transmission antenna 92a depending on the application.

  A radio wave transmitter 90a using these communication methods is installed at a specific position such as a home parking lot, and a radio wave receiver 40b and a receiving antenna 41b corresponding to the radio wave transmitter 90a are provided on the vehicle 100 side. It can be determined whether or not the vehicle has been parked for a long time. Therefore, if the radio wave receiver 40b and the receiving antenna 41b mounted on the vehicle 100 are DRSC, the radio wave receiver 40b and the receiving antenna 41b of the communication system corresponding to this are the DRSC, and the communication system corresponding to this are the RFID. The radio wave receiver 40b and the receiving antenna 41b are applied.

  Then, in the radio wave receiver 40b, when the ignition switch of the vehicle 100 is off and the radio wave from the radio wave transmitter 90a installed at the specific position is received, this received signal is transmitted to the transmission control means 60, If the control means 60 determines that the vehicle 100 has reached a specific position and has been parked for a long time, the same function as the smart key radio wave receiver 40a according to the first embodiment is achieved.

  Further, the control for stopping the transmission of the request signal of the transmission means 10 by the transmission control means 60 is executed when the door lock detection by the door lock detection means 50 is detected together with the description in the first embodiment. It's okay.

  The other components and the processing flow are the same as those of the keyless entry system according to the first embodiment, and thus the same reference numerals are given and description thereof is omitted.

  According to the keyless entry system according to the second embodiment, an appropriate communication method can be selected and used according to a specific position such as a parking lot and the situation of the vehicle 100, and the battery can be used using a communication method according to the application. It is possible to maintain the convenience of the keyless entry system while restraining consumption.

  FIG. 5 is a functional block diagram showing a schematic configuration of a keyless entry system according to a third embodiment to which the present invention is applied. In FIG. 5, the keyless entry system according to the third embodiment includes a transmission unit 10, a navigation device 40 c corresponding to the long-time parking state detection unit 40, a door lock detection unit 50, and a transmission control unit 60. Moreover, you may provide the smart key control ECU70, body ECU80, and the door lock means 81 as a vehicle-mounted relevant component.

  In the keyless entry system according to the third embodiment, the navigation device 40c is applied to the long-time parking state detection means 40, and the navigation device 40c reaches a place where the long-time parking is determined by the vehicle 100. When it is determined that the vehicle is parked, it is determined that the vehicle has been parked for a long time, and a determination signal is transmitted to the transmission control means 60.

  For example, when the vehicle 100 stops at the parking lot of the international airport, it is considered that the vehicle 100 is likely to be parked for a long time or for a long time, and the stay period may be extended. In such a case, it is considered preferable to stop the transmission of the request signal from the transmission means 10 from the beginning. Therefore, when the vehicle 100 reaches and parks at a specific position where such long-time parking is predicted, the vehicle 100 is in the long-time parking state in the navigation device 40c that is the long-time parking state detection means 40. Judge that.

  Such a place where there is a high possibility of parking for a long time may be set as a default with a determination criterion in advance in the navigation device 40c, or the user 110 arbitrarily sets a predetermined place. You may do it. In addition to international airport parking lots, harbor parking lots and the like can be determined for a long-time parking state with the navigation device 40c as a place with a high possibility of long-term parking. For example, such a place where a long-term parking is generally likely to be performed may be set in advance in the navigation device 40c as a specific position where parking is performed for a long time.

  On the other hand, when commuting to a private car or having a villa, the user 110 himself / herself sets these parking lots as specific positions in advance, so that call stop control is performed to suppress battery consumption. It can be executed in a form according to the usage of the user 110. As for the parking lots at the international airports and ports mentioned above, for example, when there are many overseas business trips, the user 110 can set the specific position in advance to ensure the transmission of the transmission means 10 when parking for a long time. Control to be stopped can be executed.

  When the navigation device 40c detects that the vehicle position is at the set specific position, the navigation device 40c determines that the vehicle 100 is parked for a long time and outputs the signal to the transmission control means 60. In the transmission control means 60, the same determination and control as those in the embodiments described so far are executed, and the transmission of the transmission means 10 is stopped. The other constituent elements are the same as those in the embodiments described so far, and thus the same reference numerals are given and the description thereof is omitted.

  Next, the operation of the keyless entry system according to the third embodiment will be described with reference to FIG. FIG. 6 is a processing flowchart of the keyless entry system according to the third embodiment.

  In step 200, the vehicle 100 stops at the parking lot.

  In step 210, it is determined whether or not the own vehicle position detected by the navigation device 40c when the ignition switch is turned off is a specific position that has a high possibility of long-term parking specified or set in advance. In other words, the navigation device 40c is set with a specific position such as the parking lot of the international airport described above, which has a high possibility of long-term parking, or a company parking lot set by the user, and the vehicle 100 stops. Is checked and recognized as to whether or not the vehicle position is stopped at these specific positions.

  In step 210, when it is recognized that the vehicle 100 is at the set specific position, the navigation device 40c determines that the vehicle 100 is parked for a long time and transmits the signal to the transmission control means 60. Then, the process proceeds to Step 220. On the other hand, if it is determined that the vehicle 100 is not at the set specific position, the process proceeds to step 230.

  In step 220, it is determined and detected whether or not all doors are locked. Similar to Step 120 and Step 130 of the processing flow according to FIG. 3 of the second embodiment, the door lock detecting means 50 detects whether or not all the doors of the vehicle 100 are locked, and the vehicle 100 is locked. Whether or not a state is present is detected.

  If all doors are not locked in step 220, step 220 is repeated until this is detected. On the other hand, when locking of all the doors is detected in step 220, the signal is sent from the door lock detecting means 50 to the transmission control means 60, and the process proceeds to step 240.

  In step 240, control for stopping the request signal from the transmission means 10 for the electronic key 20 is executed by the transmission control means 60, and the processing flow ends. In step 210, it is determined that the vehicle 100 has been parked for a long time. In step 220, since all doors have been locked, the transmission control means 60 determines that the vehicle 100 has entered long-term parking, The transmission of the transmission means 10 is stopped to suppress battery consumption.

  Returning to step 210, if the navigation device 40c recognizes that the vehicle position is not a specific position where there is a high possibility of parking for a long time, the process proceeds to step 230.

  In step 230, as in step 220, it is determined whether or not all doors are locked. In step 210, since the possibility that the vehicle 100 has been parked for a long time is no longer determined, in step 230, it is determined whether or not the normal keyless entry system is to be controlled. Note that the specific determination processing content is the same as the content described in step 120 and step 130 in FIG.

  If all doors are not locked in step 230, step 230 is repeated until locking is detected. On the other hand, if all doors are locked, the signal is sent to the transmission control means 10 and the process proceeds to step 250.

  In step 250, the transmission control means 60 executes control for transmitting a request signal from the transmission means 10 to the electronic key 20, and the processing flow is terminated. As a result, the operation of the normal key entry system is executed when parking is not performed for a long time, and the user 110 can unlock the vehicle 100 without key operation.

  As described above, in the keyless entry system according to the third embodiment, by applying the navigation device 40c to the long-time parking state determination unit 40, it is possible to set a predetermined long-term parking position that is highly likely to be performed. Then, it is possible to execute control for stopping the transmission of the transmission means 10. As a result, it is generally impossible to install long-term parking places or radio wave transmitters 90 and 90a. Can be controlled to prevent wasteful battery consumption.

  FIG. 7 is a functional block diagram showing a schematic configuration of a keyless entry system according to a fourth embodiment to which the present invention is applied. The keyless entry system according to the fourth embodiment includes transmission means 10, long-time parking determination means 40d, door lock detection means 50, and transmission control means 60. Moreover, you may provide the smart key control ECU70, body ECU80, and the door lock means 81 as a vehicle-mounted related component. In addition, as an independent related element, a scheduling means 95 having a scheduler function is provided.

  In the keyless entry system according to the fourth embodiment, a scheduling unit 95 is provided as a component independent of the vehicle 100. As the scheduling means 95, for example, an electronic device having a scheduler function such as a predetermined personal computer or a predetermined mobile phone is applied. When the user 110 uses the scheduler function of the scheduling means 95 to make a schedule for the time during which the vehicle 100 is used or not, and manages the schedule, the scheduling means 95 has a length on the vehicle 100 side. You may perform control which stops transmission of the transmission means 10 in the time slot | zone when the time parking state determination means 40d is cooperated and the vehicle 100 is not planned to be used.

  For the cooperation between the scheduling unit 95 and the long-time parking state determination unit 40d, a wireless communication unit may be used. For example, a code corresponding to a time zone in which the vehicle 100 is not used in a set schedule is assigned to the scheduling unit 95. Is transmitted to the long-time parking state determination means 40d of the vehicle 100, and in response thereto, a signal is sent from the long-time parking state determination means 40d to the transmission control means 60 so that stop control of the transmission means 10 is executed. Also good.

  In this case, for example, if the body ECU 80 controls the timepiece or the like in the vehicle 100, time information is obtained from such an ECU, and transmission is stopped at a predetermined time zone where the vehicle 100 is not used. You may comprise so that control may be performed.

  According to the keyless entry system according to the fourth embodiment, it is possible to perform transmission stop control corresponding to the time of scheduling, not the parking position of the vehicle 100, and the keyless entry system according to the first to third embodiments can be used together. It is also possible to configure.

  The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the present invention. Can be added.

  In particular, in Example 1 and Example 2, as a long-time parking state determination method for determining that the vehicle 100 is parked at a specific position where long-time parking is performed, parking at home where long-time parking is routinely performed. An example in which radio wave transmitters 90 and 90a are installed at a specific position such as a car park and this transmission signal is received has been described. In the third embodiment, the navigation device 40c is used as an example. If it can be determined that the vehicle is parked at a specific position where parking is performed for a long time by means of the above, they may be applied.

  Similarly, in the fourth embodiment, the example in which the long-time parking state of the vehicle 100 is determined from the scheduling unit 95 such as a personal computer or a mobile phone has been described. If there is a means that can determine the parking state, the long-time parking state may be determined using them.

  Further, since the first and second embodiments, the third embodiment, and the fourth embodiment apply the long-time parking state determination means 40a to 40d in different modes, the keyless entry system according to the present invention combines a plurality of embodiments. It is also possible to apply. Thereby, battery consumption can be further reduced.

It is a functional block diagram of the keyless entry system which concerns on a present Example. 1 is a functional block diagram of a keyless entry system according to Embodiment 1. FIG. It is a processing flow figure of the keyless entry system concerning Example 1. It is a functional block diagram of the keyless entry system concerning Example 2. It is a functional block diagram of the keyless entry system concerning Example 3. It is a processing flow figure of the keyless entry system concerning Example 3. It is a functional block diagram of the keyless entry system concerning Example 4.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Transmitting means 11 Outside-vehicle transmitting antenna 12 In-vehicle transmitting antenna 20 Electronic key 30 Answer signal receiving means 40, 40d Long-time parking state determining means 40a Smart key radio wave receiver 40b Radio wave receiver 40c Navigation device 41a Smart key radio wave receiving antenna 41b Radio wave receiving antenna 50 Door lock detection means 60 Transmission control means 70 Smart key control ECU
80 body ECU
81 Door lock means 90, 90a Radio wave transmitter 91, 91a Parking lot control unit 92, 92a Transmission antenna 95 Scheduling means 100 Vehicle 110 User

Claims (5)

A keyless entry system for transmitting a request signal to an electronic key from a transmission means mounted on a vehicle and unlocking the vehicle door when an answer signal returned from the electronic key is detected,
Long-time parking state determination means for determining that the vehicle is in a state of parking for a long time;
Door lock detecting means for detecting locking of the door;
When the long-time parking state detection means determines that the vehicle is in a long-time parking state and the door lock detection means detects locking of the door, the transmission means stops transmitting the request signal. A keyless entry system comprising a transmission control means.   The long-time parking state determination unit determines that the vehicle is in a long-time parking state when the vehicle reaches a specific position where long-time parking is performed. Keyless entry system. The long-time parking state determination means includes a radio wave receiver that receives a signal transmitted from a radio wave transmitter provided at the specific position,
3. The keyless entry system according to claim 2, wherein when the radio receiver receives a signal transmitted from the radio transmitter, the vehicle is determined to be parked for a long time. The long-time parking state detection means includes a navigation device in which the specific position is set,
The keyless entry system according to claim 2, wherein when the navigation device detects that the vehicle has reached the specific position, the navigation device determines that the vehicle has been parked for a long time.   The long-time parking state detection means is linked with predetermined scheduling means, and determines that the vehicle is in a long-time parking state during a time zone when the vehicle is not scheduled to be used by the scheduling means. The keyless entry system according to claim 1.

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